Granted Patent
Utility
US 5,042,652 · App. 07/453,290
Package having collar enclosure
Inventor:
Paul E. Grindrod
Patented Case
View Patent ↗
Granted: Aug 27, 1991
Filed: Dec 22, 1989
Inventor
Paul E. Grindrod
Assignee (at issue)
Oscar Mayer Foods Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.